Updated sns_portal to version 1.3.6

Updates sns_portal to version 1.3.6

In this version, I've (hopefully) supressed the CSRF exception logging. The CSRF configuration is now identical to that of sns_umthes and sns_chronik.

The following stack traces will now no longer be shown in the log:

Apr 03 02:15:09 sns docker/ubuntu_portal-web_1/f5df9f76efcb[557]: E, [2024-04-03T02:15:09.840454 #1] ERROR -- : [6b0dc34b-2c75-476a-803c-47b025e9ba5c] Can't verify CSRF token authenticity.
Apr 03 02:15:09 sns docker/ubuntu_portal-web_1/f5df9f76efcb[557]: E, [2024-04-03T02:15:09.840610 #1] ERROR -- : [6b0dc34b-2c75-476a-803c-47b025e9ba5c] /usr/local/bundle/ruby/3.2.0/gems/actionpack-7.0.8.1/lib/action_controller/metal/request_forgery_protection.rb:253:in `handle_unverified_request'
Apr 03 02:15:09 sns docker/ubuntu_portal-web_1/f5df9f76efcb[557]: /usr/local/bundle/ruby/3.2.0/gems/actionpack-7.0.8.1/lib/action_controller/metal/request_forgery_protection.rb:286:in `handle_unverified_request'
Apr 03 02:15:09 sns docker/ubuntu_portal-web_1/f5df9f76efcb[557]: /usr/local/bundle/ruby/3.2.0/gems/actionpack-7.0.8.1/lib/action_controller/metal/request_forgery_protection.rb:275:in `verify_authenticity_token'
...